private void btnLogin_Click(object sender, EventArgs e) { Login nd = new Login(txbName.Text, txbPassword.Text); try { string name = txbName.Text.Trim(); string pw = txbPassword.Text.Trim(); if (nd.kiemTraDangNhap(name, pw) == 1) { MessageBox.Show("Login sucessed", "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Information); Client.Connected += Client_Connected; Client.Connect(); // connect port 2014 Client.Send("Connect|" + txbName.Text + "|connected"); } else { MessageBox.Show("Error", "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Information); } } catch (Exception ex) { MessageBox.Show(ex.Message); } }